Milwaukee 48-11-1812 18-Volt 12.0-Ah M18 REDLITHIUM High Output Lithium-Ion Battery

Item No. 27815
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The Milwaukee 48-11-1812 M18 REDLITHIUM HIGH OUTPUT 12.0 Ah Battery Pack provides 50% more power and runs 50% cooler vs M18 REDLITHIUM HD battery packs. The massive increase in power elevates the performance of the entire M18 system and drives the next breakthrough in M18 FUEL, delivering the power of 15A corded product. It delivers fade free power and runs substantially cooler through heavy applications, allowing tradesmen to push their cordless tools harder and longer than ever before.The M18 REDLITHIUM HIGH OUTPUT HD12.0 is the best performing cold weather pack ever made, providing increased power in extreme cold weather conditions (below 0F / -18C). It provides the most work per charge of any professional power tool battery in the industry, driving full corded replacement on the jobsite. The REDLITHIUM HIGH OUTPUT HD12.0 battery is fully compatible with 150+ M18 solutions.


  • REDLINK™ Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger
  • Best-in-class construction: Offers long-lasting performance and the best protection against jobsite conditions
  • Fuel gauge onboard: Displays remaining run-time
  • Versatility: Powers more than 150 M18™ cordless solutions


  • (1) M18 REDLITHIUM™ High Output™ HD12.0 Battery Pack (48-11-1812)


Battery SystemM18
Amp Hour12.0
Weight3.4 lbs